JPS60194804A - Method and apparatus for setting direction of parabolic antenna to broadcast satellite - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a method and device for setting the orientation of a parabolic antenna with respect to a broadcasting satellite, and particularly relates to a method and apparatus for setting the orientation of a parabolic antenna with respect to a broadcasting satellite. The present invention relates to a method and apparatus for correcting the orientation of a parabolic antenna with respect to a broadcasting 2fIi star.

(v) The prior art antenna device needs to be equipped with a function to orient the antenna in the direction of the satellite, in addition to taking account of the weight of the antenna, weather conditions such as wind pressure, etc.

Since broadcasting satellites are geostationary satellites, when receiving television carrier waves from a broadcasting satellite, it is sufficient to point the antenna in the direction of the satellite's geostationary direction.However, if there are multiple broadcasting satellites, Each time you select , you need to point the antenna in the direction of the desired broadcasting satellite. In order to set the orientation of the antenna with respect to the desired broadcasting satellite, conventionally, the orientation of the antenna is manually adjusted and fixed in relation to the desired broadcasting satellite.

Therefore, if there are multiple broadcasting satellites, each time you change the desired broadcasting satellite, you will have to go outside and switch the antenna direction, which is very time-consuming, especially in the harsh winters. The switching work is a difficult task at times of bad weather or when changing the desired broadcasting satellite in a short period of time, especially when changing the desired broadcasting satellite urgently. was.

(C) Purpose of the Invention The present invention solves the above-mentioned problems associated with parabolic antennas when receiving television carrier waves from broadcasting satellites. To provide a parabolic antenna device that can perform switching work to a desired broadcasting satellite in a short time without having to go outside.

(d) Structure of the Invention The present invention automatically and mechanically sets the orientation of a parabolic antenna, that is, the azimuth and altitude angle of the receiving parabolic antenna are set for at least one broadcasting satellite. Monitor the reception input for radio waves from the broadcasting satellite by changing the angle of the satellite, and when the reception input becomes the best,
Recording each of the azimuth and altitude angles of the antenna,
A method for setting the orientation of a parabolic antenna with respect to a broadcasting satellite, the method comprising selecting a broadcasting satellite based on this record; and a control unit connected to a parabolic antenna unit having an altitude angle drive unit and an azimuth angle drive unit; A device for setting the orientation of a parabolic antenna with respect to a broadcasting satellite, characterized by comprising a storage section connected to the control section, a setting section, a sereno section, and a reception section connected to the control section via its input/output circuit. It is in.

In the present invention, the direction of the receiving parabolic antenna is changed by driving two independent drive axes. That is, one drive shaft is an azimuth drive shaft that changes the azimuth angle, and the other drive shaft is an altitude drive shaft that changes the altitude angle. Each angle is expressed as a displacement from the zero position, with an arbitrary point as the zero position.

Moreover, any means can be used to monitor the reception input as long as the reception input can be monitored. For example, monitoring can be done by watching the image on the cathode ray tube of a television receiver, but it is also possible to monitor by measuring the current flowing through the channel selection circuit.

In the device of the present invention, the control section calculates the altitude angle and azimuth angle with respect to the desired satellite by instructing the latitude and longitude of the point where the antenna mounting section is installed and the longitude of the broadcasting satellite. a storage unit, a setting unit,
Any type of control device can be used as long as it has the function of controlling the select section, altitude angle drive section, and azimuth angle drive section.

Further, the storage unit has a function of storing and recording constants necessary for operating the apparatus of the present invention, altitude angles and azimuths of each of the plurality of broadcasting satellites, and transmitting this information to the control unit. Any type of storage device having a recording section can be used as long as it has such a function. It is preferable to use one that does not disappear even when the power supply to the device is turned off.

Necessary constants stored in advance in this storage section include, for example, the radius of the earth, the altitude of the broadcasting satellite, and the maximum values of the altitude angle and azimuth angle for each broadcasting satellite.

The setting unit also inputs information signals necessary for operating the altitude angle drive unit and the azimuth angle drive unit to the control unit in order to orient the parabolic antenna in the direction of the desired satellite;
Furthermore, when the reception input of the carrier wave from the broadcasting satellite becomes the best, the control unit is instructed to store the altitude angle and azimuth angle of the parabolic antenna with respect to the broadcasting satellite in the storage unit; , a display that has a function of changing the constants stored in the storage unit, and allows you to check the information and constants stored in the storage unit necessary to set the direction of the parabolic antenna in the direction of a desired broadcasting satellite. It can be used as a display device.

Further, the selection section instructs the control section to select a desired broadcasting satellite, and in order to give this instruction, for example, a device provided with a switch corresponding to each of the broadcasting satellites is used. Ru.

In this case, the desired broadcasting satellite can be selected by selecting the switch corresponding to the desired broadcasting star. Of course, it is also possible to perform this by other means.

Upon receiving the instruction from the select section, the control section retrieves information related to the altitude angle and azimuth of the target broadcasting satellite stored in the storage section from the storage section, performs calculations based on this information, and calculates the altitude angle. It is possible to instruct the drive unit and the azimuth drive unit to change the direction of the parabolic antenna by a predetermined amount of displacement, and to control the drive of these drive units.

It is preferable to provide the select section with a display device that displays that the control section is receiving an instruction from the select section, since this allows confirmation of the presence or absence of an instruction from the select section.

In the device of the present invention, the altitude angle and azimuth angle drive section receives the altitude angle setting signal and azimuth angle setting signal from the control section, respectively, amplifies these signals to necessary signals, and rotates the altitude angle and azimuth angle setting. Also, by rotating the altitude angle and azimuth angle setting rotating section, the monitoring signal from the receiving section that indicates that the parabolic antenna is oriented in the direction of the desired broadcasting satellite is controlled. The altitude angle and azimuth angle setting rotary unit stops rotating, and information regarding the altitude angle and azimuth angle of the parabolic antenna is input to the control unit. −
The force control section processes the information from this drive section and stores it in the storage section.

Further, the receiving section is a device that receives carrier radio waves from a desired broadcasting satellite using a parabolic antenna and monitors the reception input thereof. In the case of a television broadcasting satellite, it can be a cathode ray tube surface of a television receiver, but it can also be a current measuring device of a channel selection circuit, etc. as appropriate.

The antenna mounting part has an altitude angle setting rotation part and an azimuth angle setting rotation part built in outside the antenna, and the parabolic antenna is fixed to the rotation mechanism of the altitude angle setting rotation part and the rotation mechanism of the azimuth angle setting rotation part. The direction of the antenna can be arbitrarily set by rotating these rotating parts. The altitude angle and azimuth angle setting rotation unit receives the drive signal from the altitude angle and azimuth angle drive unit, rotates the drive shaft, generates a pulse signal corresponding to the rotation of each drive shaft, and The rotation of the drive shaft stops when the specified angle is reached.

(e) Embodiment The figure is a block diagram showing an embodiment of the method and apparatus for setting the orientation of a parabolic antenna with respect to a broadcasting satellite according to the present invention. Hereinafter, embodiments of the present invention will be described with reference to this figure, but the present invention is not limited to this explanation.

The control section 1 includes a setting section 2, a selection section 3, a storage section 4, a reception section 5, an altitude angle drive section 6, an azimuth angle drive section 7, an altitude angle setting rotation section (servo motor) 8, and an azimuth angle setting rotation section ( It is connected to a servo motor) 9, a setting input/output circuit 10, a select/receiving input/output circuit 11, and a main central processing circuit (hereinafter referred to as the main CPU circuit).

) 12, servo central processing circuit (hereinafter referred to as servo CPU circuit) 13, multipath control circuit 14, read-only memory circuit (hereinafter referred to as R-Ko circuit) 15 and 16, digital-to-analog signal conversion circuit ( Below, D/A
It is called a conversion circuit. ) 17 and 21, frequency-voltage signal conversion circuit (hereinafter referred to as F-V conversion circuit) 18 and 22
, forward/reverse rotation determination circuits 20 and 24, and up/down counter circuits 1 and 23. In this example, D/A conversion circuits 17 and 21, F-V conversion circuits 18 and 22, up-grain counter circuits 19 and 23, and forward/reverse rotation determination circuits 20 and 21 are used for altitude angle setting and azimuth angle setting. 24 is provided with two circuits.

A setting input/output circuit 10 is provided at the contact section of the control section 1 with the setting section 2 as a date circuit for transmitting and receiving a signal from the setting section, for example, an Rs-232C signal. A select/receive input/output circuit 11 is connected to the connecting portion between the select section 3 and the receiving section 5 as a gate circuit for predetermined signals from the select section 3 and the receiving section 5.
is provided.

This setting input/output circuit 10, select/reception input/output circuit 1
1 is connected to the main CPU circuit 12, and signals from the setting section 2, selection section 3, and reception section 5 are sent to the main CPU circuit 1.
It is now sent to 2.

In this example, the main CPU circuit 12 is formed of an 8-bit microprocessor, etc., and reads the program stored in the ROM circuit 15 using signals from the setting section 2 and select section 3, and executes the program according to the program. According to the sequence described above, an operation command signal is sent to each circuit of the control section 1, an answerback signal from each circuit is processed, and an information signal is sent to the setting section 2 and the selection section 3. A storage unit 4 is connected to the main CPU circuit 12, and input/output of individual altitude angles and azimuths of a plurality of broadcast satellites and other necessary information is input/output from the storage unit 4 to the main CPU circuit 12. .

The servo CPU circuit 13 is for controlling the altitude angle drive section 6 and the azimuth angle drive section 7, and in this example, it is formed of a 16-bit microprocessor, etc., and is connected to the multipath control circuit 14, ROM, etc. The circuit 16 is connected to the D/A conversion circuits 17 and 21 and the 7-up-down force counter circuits 19 and 23, respectively, and the information signal from the main CPU circuit 12 is sent to the altitude angle drive section 6 and/or the azimuth angle drive section 7. The rotation of the altitude angle setting rotation section 8 and/or the azimuth angle setting rotation section 9 is controlled by pulse signals for the feed and servo motors. That is, the sequence program stored in the ROM circuit 16 is read out by a command signal from the main CPU circuit 12, and the sequence program stored in the ROM circuit 16 is read out and the multipath circuit 14 and each D/D/
While outputting operation command signals to the A conversion circuits 17 and 21, this program reads information related to altitude angle and azimuth from the main CPU circuit 12, and branches into two routes, altitude angle system and azimuth angle system, respectively. The signal is then output to the husband's D/A conversion circuits 17 and 21.

The multipath control circuit 14 is connected to the main CPU circuit 12 and the servo CPU circuit 13, and controls information communication between the main CPU circuit 12 and the servo CPU circuit 13.
3. Transfers operation command signals, answer back signals, information, etc. In this example, the shift register and FI
An FO or the like is used to allow reading and writing from each CPU circuit.

The ROM circuit 15 is connected to the BtlS line of the main CPU circuit IZ, and the ROM circuit 16 is connected to the servo CPU circuit 13.
It is connected to the BuS line of.

The ROM circuits 15 and 16 contain programs necessary for the operation of this apparatus, and the CPU circuits 12 and 13 are controlled by these programs. 8k as an R leaf element
A bit ICR (read-only storage element) is used.

In particular, the ROM circuit 15 includes a setting section 2, a selection section 3,
A program is provided to determine at what timing the main CPU circuit 12 outputs and inputs operation command signals, information, etc. to the storage section 4, the reception section 5, and the servo CPU circuit 13.

The input side of the D/A conversion circuits 17 and 21 is connected to the servo CPU circuit 13, and the output side is connected to the altitude angle drive unit 6.
The output side of the U circuit 13 is connected to the azimuth angle drive section 7, respectively. The servo CPU circuit 13 outputs signals for driving and controlling the servo motors of the altitude and azimuth setting rotation units 8 and 9 as digital signals, and these circuits 17 and 21 convert the digital signals into voltages. These circuits 17 and 21 convert the digital signal into an analog signal for driving the servo motor, and these circuits 17 and 21 provide a binary numerical value corresponding to the digital signal, that is, a binary numerical analog signal. In this example, 12-bit D/A conversion IC elements are used in both cases.

Among the F-V conversion circuits 1 and 22, 18 has its input side connected to the forward/reverse rotation determination circuit 20 of the altitude angle system, and its output side connected to the altitude angle drive unit 6t, and 22 has the following: The input side is connected to the azimuth-based forward/reverse rotation determination circuit 24, and the output side is connected to the azimuth angle drive unit 7, respectively. F-V conversion circuit 18
and 22 converts a pulse signal of a frequency corresponding to the rotational speed of the servo motor, which is generated by a pulse generator incorporated in the servo motor of the altitude angle setting rotation unit 8 and the azimuth angle setting rotation unit 9, into an analog signal corresponding to the voltage. It is a circuit.

Among the forward/reverse rotation determination circuits 20 and 24, 20 has an input side connected to the altitude angle setting amount @ section 8, and an output side connected to the altitude angle system up/down counter circuit 19 and F-V conversion circuit 18. 24 is connected to the azimuth angle setting rotary unit 9 on the input side, and to the azimuth system seven pull-down force twister circuit 23 and the F-V conversion circuit 24 on the output side. The forward/reverse rotation determination circuits 20 and 24 are date and time circuits that determine whether the servo motor rotates forward or reverse based on the pulse signal of a pulse generator built into the servo motor of the altitude angle setting rotation section 8 and the azimuth angle setting rotation section 9. This circuit determines whether the servo motor is rotating forward or reverse based on the A1B two-phase signal from the servo motor's pulse generator, and corresponds to the number of revolutions per unit time of the servo motor during forward and reverse rotation. It creates a pulse frequency signal.

The input side of the up/down counter circuits 19 and 23 is connected to the forward/reverse rotation determination circuit 20 of the altitude angle system, and the output side is connected to the servo CPU circuit 13.
3 is connected to the azimuth system forward/reverse rotation determination circuit 24 on the input side and to the servo CPU circuit 13 on the output side. The forward rotation or reverse rotation pulse signals generated by the forward/reverse rotation determination circuits 20 and 24 are input up or down, respectively, and the altitude angle is set by counting up when inputting up or down when inputting down. This is a circuit that transmits to the servo CPU circuit 13 in binary numerical values how much each of the rotating section 8 and the azimuth angle setting rotating section 9 has operated from a reference value, for example, an origin value or a zero value. The setting section 2 is connected to the control section 1 and includes an input/output circuit 25, a setting medium heat processing circuit (hereinafter referred to as a setting CPU circuit) 26, a key switch circuit 27, and a display circuit 28.

The input/output circuit 25 is connected to the setting input/output circuit 10 and the setting CPU circuit 26 of the control unit 1, and is used to send the TTL level R3-232C serial signal output from the CPU circuit 26 to the control unit 1. Convert voltage. Further, the setting CPυ circuit 26 receives a serial information signal sent from the control section 1 through R5-232C, and converts the voltage into a TTL level signal.

The setting CPU circuit 26 is connected to the input/output circuit 25, the key switch circuit 27, and the display circuit 28, and receives switch information from the key switch circuit 27 and outputs a TTL level serial signal based on the R5-232C transmission 7-ohm. is generated and sent to the output circuit as well as R from the control section 1.
It receives a serial information signal sent by 5-232C transmission 7 format and outputs display information to the display circuit 28.

The output side of the key switch circuit 27 is connected to the setting CPυ circuit 26, and is used to input information necessary for this device, including numeric keypad switches for numbers θ to 9, switches for selecting each mode, and altitude Angle and azimuth rotation part 8
and 9 can be rotated arbitrarily, and when each switch is operated, the setting CPU
The signal is input to the circuit 26.

The input side of the display circuit 28 is connected to the setting CPU circuit 26, and this display circuit 28 displays the altitude angle and azimuth information of each of the plurality of broadcast satellites from the control unit 1. It receives input information etc. from the setting CPU circuit 26 and displays it.

Examples of display devices include liquid crystal displays and plasma displays.

The select section 3 is connected to the control section 1 and has an input/output circuit 29.
, a switch circuit 30 and a display circuit 31. The input/output circuit 29 is connected to the select/receive input/output circuit 11 of the control unit 1, and is a date circuit for connecting the control unit 1 and the select unit 3, and input information from the switch circuit 30 to the control unit 1. At the same time, it receives a monitoring signal corresponding to the broadcasting satellite selected as desired and passes it to the display circuit 31.

The switch circuit 30 has an output side connected to the input/output circuit 29, and is formed of switches corresponding to each of a plurality of broadcast satellites, and in order to select a desired broadcast satellite, the switch corresponding to the satellite must be pressed. The switch contact signal is sent to the control unit 1 via the input/output circuit 29.

The display circuit 31 has an input side connected to the input/output circuit 29, and is a circuit that displays the broadcasting satellite to which the parabolic antenna 36 is directed.

When the broadcasting satellite to be rectified is selected by the switch circuit 30, the selection signal is sent to the control unit 1 via the input/output circuit 29, and as a result, the control unit 1 indicates that the parabolic antenna is directed to the selected broadcasting satellite. A monitoring signal to be displayed enters the display circuit via the input/output circuit 29 and is displayed.

Display methods include displaying numbers corresponding to a plurality of broadcasting satellites and displaying several lamps or light emitting diodes corresponding to broadcasting satellites.

The storage unit 4 stores the main CP of the control unit 1 [BU of 1 circuit 12
Connected to the S line and connected to the interface circuit 32
, a memory circuit 33, and a battery circuit 34.

The interface circuit 3Z is connected to the main CPU circuit 12 of the control unit 1 by a BUS line method and also to the memory circuit, and writes information to and from the memory circuit 33 according to instructions from the main CPU circuit 12. It controls reading of information and inputs and outputs information to the main CPt1 circuit.

The memory circuit 33 is connected to the interface circuit 32 and the battery circuit 34, and stores altitude angles, azimuth angles corresponding to a plurality of broadcasting satellites, information necessary for this device, etc., and can be read and written freely. IC
It is a memory circuit. In this example, an 8k bit ICRAM is used as the memory element.

The battery circuit 34 has an output side connected to the memory circuit 33, and is a circuit to protect the memory circuit from accumulating information in the memory circuit even if the device is turned off due to a power outage. A nickel-cadmium battery is used as a battery.

The input side of the altitude angle drive unit 6 and the azimuth angle drive unit 7 are connected to the control unit 1, and the output sides are connected to the altitude angle setting rotation unit 8 and the azimuth angle setting rotation unit 9, respectively. These drive units 6 and 7 operate by comparing the command voltage (for example, in this example, the voltage signals output from the D/A conversion circuits 17 and 21 of the control unit 1 and the feedback signal of the pulse signal of the pulse generator of the servo motor). In addition to controlling the speed of each servo motor, the servo motor control signal obtained by comparing the command voltage and the feedback signal is amplified.

In this example, this drive section is a commonly-called servo amplifier.

The altitude angle setting rotation unit 8 has an input side connected to the output side of the altitude angle drive unit 6, an output side connected to the forward/reverse rotation determination circuit 20, and an operating shaft 37 connected to the parabolic antenna 36. There is. The parabolic antenna 36 is moved in the vertical direction by driving the servo motor of the altitude angle setting rotation unit 8.

Further, the azimuth angle setting rotation unit 9 has an input side connected to the azimuth angle drive unit 7.
The output side is connected to the forward/reverse rotation determination circuit 2, and its operating shaft is connected to the accommodation chamber 40 of the altitude angle setting rotation section 8 of the mounting section 39 of the parabolic antenna 36. . By rotating the accommodation chamber 40 by driving the servo motor of the azimuth angle setting rotation unit 9, the parabolic antenna 3
Rotate 6.

These rotating parts 8 and 9 incorporate a motion transmission mechanism for converting the rotational movement of the servo motor into vertical movement and rotational movement of the parabolic antenna.

Since the device of the present invention is configured in this way, in order to set the position for each of a plurality of broadcast satellites, first, the program mode switch (hereinafter referred to as "prtc") of the key switch circuit 27 of the setting section 2 is set. , 1 mode switch) is turned on. When the l"Pl'lGJ mode switch is turned on, the "PRGJ signal is read by the main CPU circuit 12 of the control unit 1, and the ROM circuit 15
According to the program, the main CPU circuit 12
It determines that the mode is GJ, sends data indicating that it is the "PRG" mode to the setting section 2, and displays 1P on the display circuit 28 of the setting section 2.
Displays ItGJ mode. Next, turn on the increment mode switch (hereinafter referred to as "INcJ mode switch") of the key switch circuit 27 of the setting section 2,
Only after the broadcasting satellite number No. 1 is displayed on the display circuit 28 of the setting unit 2 is a state in which the altitude and azimuth angles for the broadcasting satellite N001 can be adjusted.

Once set in this way, move the parabolic antenna up and down by repeatedly operating the altitude angle forward switch E1, altitude angle reverse switch E2, azimuth forward switch A1, and azimuth reverse switch A2 of the key switch 27 of the setting unit 2. Adjust it by moving it left or right to get the best signal from the receiving section 35.

For example, when the azimuth forward rotation switch A is pressed, the signal A from the setting section 2 is inputted to the main CPU circuit 12 through the setting input/output circuit 10 of the control section 1. Next, main C
1 of PU circuit 12 (A1 of the program of 615)
According to the sequence program of the signal control part, the A signal follows multipath control and is read into the servo CPU circuit 13. When the A1 signal is input to this servo CP'U circuit 13, the digital signal is sent to the azimuth system D/A conversion circuit 21 according to the program sequence of the ROM circuit 16, where it is converted into voltage and converted into an analog signal. This analog command voltage is sent to the azimuth angle drive unit 7 and amplified to rotate the servo motor of the azimuth angle setting rotation unit 9 and swing the parabolic antenna 36 to the right.

When the servo motor rotates, a pulse signal of two phases, A and B, corresponding to the number of rotations per unit time of the servo motor is sent from the pulse generator built into the servo motor to the forward/reverse rotation determination circuit 24 to determine whether the rotation is forward or reverse. determine whether
Generates either forward or reverse pulses. In the case of this explanation of the present example, normal rotation of the azimuth angle is taken as an example, so a pulse of normal rotation is generated. This pulse signal is sent to the F-V conversion circuit 22 and up/down counter circuit 23. The normal rotation pulse that has entered the F-V conversion circuit 22 is converted into an analog voltage 1 corresponding to the number of rotations per unit time of the servo motor, and is sent to the azimuth angle drive unit 7. The analog voltage sent to the azimuth drive section 7 controls the analog command voltage converted into voltage by the D/A conversion circuit 21 so that the number of revolutions per unit time of the servo motor becomes constant. - On the other hand, the normal rotation pulse sent to the up/down counter circuit 23 enters the up input, whereupon the up/down circuit 23 counts up and calculates the position of the azimuth setting rotary unit 9. In other words, the azimuth angle of the parabolic antenna is output as a binary value (binary system).

The binary value of the up/down counter circuit 23 is read at regular intervals by a program sequence of the ROM circuit 16 of the servo CPU circuit 13.

While the A1 switch of the key switch circuit 27 of the setting section 2 is on, the above operation continues, but when this A1 switch is turned off, the above operation stops. Stop.

Such an operation is performed by azimuth angle reversal switch A2, altitude angle forward rotation switch E3, altitude angle reversal switch E2tfm,
Then, the azimuth and altitude angle of the parabolic antenna are transmitted to the receiver 3.
5, and when the receiving condition of the antenna becomes the best, set mode switch (hereinafter referred to as "ST" switch) of the key switch circuit 27 of the setting section 2.

) on. When this rsTJ switch is turned on, the main CPU circuit 12 of the control unit 1 assumes that the parabolic antenna 36 is facing the No. 1 broadcast satellite, and transmits that information to the multipath control circuit according to the program sequence of the ROM circuit 15. 14 to the servo CPU circuit 13 to read the respective angles of altitude and azimuth of the parabolic antenna from the up/down counter circuits 19 and 23, and to read the binary values of the up/down counter circuit 19 and 23.
The altitude angle and the azimuth angle are written in a predetermined area of the storage unit 4.

These operations are performed on each of the other broadcasting satellites, and each is written in a predetermined area of the storage unit 4.

In this way, when the altitude angle and azimuth angle of each of the plurality of broadcasting satellites are stored in the storage unit 4, when selecting a desired broadcasting satellite, the switch circuit 30 of the SEREG 1 section 3 selects the desired broadcasting satellite. Press the switch corresponding to the satellite to turn it on. When the switch corresponding to the desired broadcasting satellite is turned on, this signal passes through the select/receive input/output circuit 11 of the control unit 1 and is sent to the main CPU circuit 1.
2. There, the main CPU circuit 12 is
According to the program sequence of the ROM circuit 15, information regarding the altitude and azimuth of the desired broadcasting satellite is read from the corresponding area of the storage unit 4. This main CPU circuit 1
The altitude angle and azimuth information data read by 2 is sent to the servo CPU via the multipath control circuit 14.
Send to circuit 13. After receiving this information data, 1. Servo C
The PU circuit 13 receives the altitude angle and azimuth information from the D/A of each series according to the program sequence of the ROM circuit 16.
It is divided into conversion circuits 17 and 21, voltage-converted into an analog signal, and passed through the respective series of drive units 6 and 7.
The servo motors of the setting rotation units 8 and 9 of each series are rotated.

The AlB two-phase pulse signal from the pulse generator of the servo motor passes through the forward/reverse rotation determination circuits 20 and 24 of each series, and then the F-V conversion circuits 18 and 2 of each series.
2 and up-grain counter circuits 19 and 23. The analog voltages from the F-V conversion circuits 18 and 22 control the analog command voltages from the D/A conversion circuits 17 and 21, so that the number of revolutions per unit time of the servo motor becomes constant. Upgrade counter circuits 19 and 23 generate binary values for altitude and azimuth angles and send them to servo CPU circuit 13.

The servo CPU circuit 13 compares the binary values of the position information of the desired azimuth angle and altitude angle of the broadcasting satellite with the binary values of the azimuth angle and altitude angle information of the seven power counter circuits 19 and 23, so that they match. Then, D
The digital information sent to the /A conversion circuit is set to zero, the altitude angle and azimuth angle drive units are stopped, and the servo motor is stopped.

In addition, the servo CPU circuit 13 instructs the main CPU circuit 12 via the multipath control circuit 14 to confirm that the two pieces of information match as described above, and notifies the main CPU circuit 12 that the parabolic antenna 36 is directed toward the desired broadcasting satellite. , the state waits for the next selection.

(f) Effects of the invention Since the method and apparatus of the present invention are configured as described above,
In the setting section, the latitude and longitude of the installation point of the antenna mounting section,
By inputting the longitude of the broadcasting satellite, the control unit calculates the altitude angle and azimuth angle for the plurality of broadcasting satellites using the radius of the earth and the altitude of the broadcasting satellite stored in the storage unit. , this value is stored in the memory section, so simply select the switch corresponding to the desired broadcasting satellite from the selection section, rotate the altitude angle, azimuth angle, and setting rotation section to set the antenna to the desired broadcasting satellite. Can be pointed in the right direction.

In general, the longitude of each broadcasting satellite is fixed because it is a geostationary satellite on the equator, but the latitude and longitude of the installation point of the antenna mounting part are different, so the latitude and longitude of the antenna mounting part are different. It is difficult to input accurately from the setting section. Therefore, errors occur in the values of the altitude angle and azimuth angle, and if they are stored in the storage unit as they are, it may not be possible to accurately point the antenna in the direction of the broadcasting satellite.

However, in the present invention, the altitude angle and azimuth are finely adjusted in the setting section before being stored in the storage section, so that the altitude angle and azimuth angle are adjusted to the best altitude angle and azimuth angle, and then the altitude angle and azimuth angle are stored in the storage section. The parabolic antenna can be easily directed in the direction of the broadcasting satellite, and the orientation of the antenna can be reliably changed indoors with a simple operation.

Therefore, compared to conventional devices, the present invention allows the antenna to be accurately and quickly directed to a desired broadcasting satellite by simply selecting a switch. When applied to the selection of broadcasting satellites, its influence is very small.

[Brief explanation of the drawing]

The figure is a block diagram outlining one embodiment of the method and apparatus for setting the orientation of a parabolic antenna according to the present invention. In the figure, 1 is a control section, 2 is a setting section, 3 is a selection section, 4 is a storage section, 5 is a reception section, 6 is an altitude angle drive section, 7 is an azimuth angle drive section, and 8 is an altitude angle setting rotation 9 is an azimuth angle setting rotation part, 10 is a setting input/output circuit, 11 is a select reception input/output circuit, 12 is a main CPU circuit, and 13 is a servo CPU.
circuit, 14 is a multipath control circuit, 15 and 16 are RO
M circuit, 17 and 21 are D/8 conversion circuits, 18 and 22
is an F-V conversion circuit, 19 and 23 are up/down counter circuits, 20.24 is a forward/reverse rotation determination circuit, 25 and 2
9 is an input/output circuit, 26 is a setting CPU circuit, 27 is a key switch circuit, 28 and 31 are display circuits, 30 is a switch circuit, 32 is an interface circuit, 33 is a memory circuit, 34 is a battery circuit, 35 is a receiving circuit, 36 is a parabolic antenna, 37 and 38 are operating shafts, 39 is an antenna mounting portion, and 40 is an altitude angle setting rotating portion housing chamber.

Claims (2)

[Claims] (1) Change the azimuth and altitude angles of the receiving parabolic antenna for at least one broadcasting satellite, monitor the reception input for radio waves from the broadcasting satellite, and obtain the best reception input. By the way, a method for setting the orientation of a parabolic antenna marked on a broadcasting satellite is characterized in that the azimuth angle and the altitude angle of the antenna are recorded, and the broadcasting satellite is selected based on this recording. (2) A control section connected to the parabolic antenna section having an altitude angle drive section and an azimuth angle drive section, a storage section connected to the control section, and a setting section connected to the control section via its input/output circuit. 1. A device for setting the orientation of a parabolic antenna with respect to a broadcasting satellite, the device comprising: a selection section and a reception section.